Each row of the table below represents a cone with a height of 9 inches and a different radius.
6.1
Calculate the volume of each cone.
Write your answer in terms of it or rounded to the nearest cubic inch.
Radius (in.)
Volume (cubic in.)
1

2

3

9 in.
6.2
Is there a linear relationship between the radius and the volume of these cones?
Explain your thinking.